Inventor · disambiguated record
George I. Boyadjieff
Also filed as: BOYADJIEFF GEORGE · BOYADJIEFF GEORGE I
51 granted patents·2 pending applications·3,660 citations·filing 1974–2010
99Inventor score
Top patents by PatentIndex Score
53 records- 0199US4765401AApparatus for handling well pipeVARCO INT·Filed 1986·Granted Aug 23, 1988·333 cites·24 claims
- 0299US4449596ADrilling of wells with top drive unitVARCO INT·Filed 1982·Granted May 22, 1984·335 cites·40 claims
- 0398US4605077ATop drive drilling systemsVARCO INT·Filed 1984·Granted Aug 12, 1986·224 cites·12 claims
- 0497US6443241B1Pipe running toolVARCO INT·Filed 2000·Granted Sep 3, 2002·224 cites·15 claims
- 0597US4709766AWell pipe handling machineVARCO INT·Filed 1985·Granted Dec 1, 1987·174 cites·41 claims
- 0697US4625796AWell pipe stabbing and back-up apparatusVARCO INT·Filed 1985·Granted Dec 2, 1986·175 cites·35 claims
- 0797US4529045ATop drive drilling unit with rotatable pipe supportVARCO INT·Filed 1984·Granted Jul 16, 1985·187 cites·22 claims
- 0896US4023449ATool for connecting and disconnecting well pipeVARCO INT·Filed 1976·Granted May 17, 1977·118 cites·17 claims
- 0994US7096977B2Pipe running toolVARCO INT·Filed 2005·Granted Aug 29, 2006·66 cites·19 claims
- 1094US6691801B2Load compensator for a pipe running toolVARCO INT·Filed 2001·Granted Feb 17, 2004·173 cites·26 claims
- 1194US5451129APipe transfer systemVARCO INT·Filed 1993·Granted Sep 19, 1995·71 cites·41 claims
- 1294US4489794ALink tilting mechanism for well rigsVARCO INT·Filed 1983·Granted Dec 25, 1984·119 cites·14 claims
- 1393US7591304B2Pipe running tool having wireless telemetryVARCO INT·Filed 2005·Granted Sep 22, 2009·62 cites·13 claims
- 1493US6637526B2Offset elevator for a pipe running tool and a method of using a pipe running toolVARCO INT·Filed 2001·Granted Oct 28, 2003·148 cites·19 claims
- 1593US4421179ATop drive well drilling apparatusVARCO INT·Filed 1981·Granted Dec 20, 1983·117 cites·12 claims
- 1693US4365676AMethod and apparatus for drilling laterally from a well boreVARCO INT·Filed 1980·Granted Dec 28, 1982·118 cites·38 claims
- 1793US3961399APower slip unitVARCO INT·Filed 1975·Granted Jun 8, 1976·81 cites·26 claims
- 1892US7699121B2Pipe running tool having a primary load pathVARCO INT·Filed 2005·Granted Apr 20, 2010·41 cites·15 claims
- 1992US4535852ADrill string valve actuatorVARCO INT·Filed 1983·Granted Aug 20, 1985·52 cites·21 claims
- 2092US4348920AWell pipe connecting and disconnecting apparatusVARCO INT·Filed 1980·Granted Sep 14, 1982·105 cites·15 claims
- 2191US7225803B2Pavement saw and vacuum apparatusBOYADJIEFF GEORGE I·Filed 2006·Granted Jun 5, 2007·24 cites·20 claims
- 2290US4051587APile handling apparatus and methodsVARCO INT·Filed 1976·Granted Oct 4, 1977·37 cites·20 claims
- 2388US4458768ATop drive well drilling apparatusVARCO INT·Filed 1982·Granted Jul 10, 1984·78 cites·9 claims
- 2487US7911173B2Open loop method for controlling powerPOWER EFFICIENCY CORP·Filed 2008·Granted Mar 22, 2011·19 cites·35 claims
- 2587US4610465AStructure and use of remotely releasable pile connectorsVARCO INT·Filed 1983·Granted Sep 9, 1986·41 cites·28 claims
- 2683US4696207AWell pipe handling machineVARCO INT·Filed 1986·Granted Sep 29, 1987·68 cites·64 claims
- 2781US4405115AGripping jack systemVARCO INT·Filed 1981·Granted Sep 20, 1983·28 cites·15 claims
- 2880US6938709B2Pipe running toolVARCO INT·Filed 2002·Granted Sep 6, 2005·48 cites·15 claims
- 2974US7108081B2Instrumented internal blowout preventer valve for measuring drill string drilling parametersVARCO INT·Filed 2004·Granted Sep 19, 2006·39 cites·20 claims
- 3073US7510006B2Pipe running tool having a cement pathVARCO INT·Filed 2005·Granted Mar 31, 2009·14 cites·20 claims
- 3171US8037949B2Pipe running toolVARCO INT·Filed 2010·Granted Oct 18, 2011·3 cites·23 claims
- 3271US4476936AJacking mechanism supported by a wellheadVARCO INT·Filed 1983·Granted Oct 16, 1984·37 cites·6 claims
- 3370US6776070B1Iron roughneckVARCO INT·Filed 2000·Granted Aug 17, 2004·43 cites·14 claims
- 3469US7768221B2Method, system, and apparatus for controlling an electric motorPOWER EFFICIENCY CORP·Filed 2007·Granted Aug 3, 2010·13 cites·20 claims
- 3567US6588501B1Method and apparatus to reduce hydrostatic pressure in sub sea risers using buoyant spheresVARCO INT·Filed 2002·Granted Jul 8, 2003·29 cites·36 claims
- 3665US4479547AWell pipe jackVARCO INT·Filed 1983·Granted Oct 30, 1984·30 cites·9 claims
- 3764US8128269B2Smoke environment personnel identification apparatusBOYADJIEFF GEORGE I·Filed 2009·Granted Mar 6, 2012·3 cites·17 claims
- 3864US4437524AWell drilling apparatusVARCO INT·Filed 1982·Granted Mar 20, 1984·28 cites·22 claims
- 3964US4084385APile handing methodsVARCO INT·Filed 1977·Granted Apr 18, 1978·16 cites·15 claims
- 4058US6763887B2Drill pipe having an internally coated electrical pathwayVARCO INT·Filed 2002·Granted Jul 20, 2004·16 cites·30 claims
- 4157US4595062AWell casing jack mechanismVARCO INT·Filed 1980·Granted Jun 17, 1986·22 cites·11 claims
- 4256US7753138B2Pipe running tool having internal gripperVARCO INT·Filed 2005·Granted Jul 13, 2010·5 cites·16 claims
- 4354US4446761APipe spinning toolVARCO INT·Filed 1981·Granted May 8, 1984·25 cites·15 claims
- 4454US4421175AMethod of drilling and casing a wellVARCO INT·Filed 1981·Granted Dec 20, 1983·20 cites·15 claims
- 4553US4203182ASlip assemblyVARCO INT·Filed 1979·Granted May 20, 1980·19 cites·32 claims
- 4645US2010155140A1Pipe running tool having a primary load pathVARCO INT·Filed 2010·Application pending·0 cites
- 4744US7117944B2Drill pipe having an internally coated electrical pathwayVARCO INT·Filed 2004·Granted Oct 10, 2006·5 cites·23 claims
- 4842US4437515APositioning of well pipe jack in a rigVARCO INT·Filed 1981·Granted Mar 20, 1984·12 cites·15 claims
- 4939US8493013B2Electric motor control algorithm with bypass relayBOYADJIEFF GEORGE I·Filed 2008·Granted Jul 23, 2013·0 cites·21 claims
- 5036US3990508ARemotely operated well safety valvesVARCO INT·Filed 1974·Granted Nov 9, 1976·7 cites·4 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →